The Influence of the MCVD Process Parameters on the Optical Properties of Bismuth-Doped Phosphosilicate Fibers

被引：31

作者：

Khegai, Aleksandr ^{[1
]}

Afanasiev, Fedor ^{[2
]}

Ososkov, Yan ^{[1
]}

Riumkin, Konstantin ^{[1
]}

Khopin, Vladimir ^{[2
]}

Lobanov, Alexey ^{[2
]}

Yashkov, Mikhail ^{[2
]}

Firstova, Elena ^{[1
]}

Abramov, Alexey ^{[2
]}

Melkumov, Mikhail ^{[1
]}

Guryanov, Alexey ^{[2
]}

Firstov, Sergei ^{[1
]}

机构：

[1] Russian Acad Sci, Dianov Fiber Opt Res Ctr, Prokhorov Gen Phys Inst, Moscow 119991, Russia

[2] Russian Acad Sci, Devyatykh Inst Chem High Pur Subst, Nizhnii Novgorod 603951, Russia

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2020年 / 38卷 / 21期

基金：

俄罗斯基础研究基金会;

关键词：

Bismuth; lasers; MCVD; optical fibers; spectroscopy; SPECTRAL REGION; LASERS; DEPOSITION; AMPLIFIERS; CENTERS; GAIN;

D O I：

10.1109/JLT.2020.3008536

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this article, we describe the technology for manufacturing of the phosphosilicate bismuth-doped optical fibers providing optical amplification near 1.32 mu m. The effect of preforming sintering process and fiber drawing on the optical properties of the fabricated fibers were studied. We showed that an increase in the vitrification temperature of the P-doped silica glass soot layers deposed on the inner surface of a fused silica tube from 1850 to similar to 2000 degrees C (while keeping other parameters unchanged) provides a noticeable reduction of the unsaturable losses. We also found that the fiber drawing speed significantly affects the optical properties of bismuth-doped fibers. In particular, an increase in the drawing speed from similar to 1 to similar to 80 m/min led to a decrease of both active absorption and unsaturable losses, while the ratio of active absorption to unsaturable losses became greater. As a result, the laser efficiency of the bismuth-doped fibers grew two-fold from 19.5% to 37%.

引用

页码：6114 / 6120

页数：7

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